Results 111 to 120 of about 1,364,033 (418)

Flow characteristics of the proximal pulmonary arteries and vena cava in patients with chronic thromboembolic pulmonary hypertension: correlation between 3.0 T phase-contrast MRI and right heart catheterization

Diagnostic and Interventional Radiology, 2014
PURPOSEWe aimed to determine the correlation between flow characteristics of the proximal pulmonary arteries and vena cava obtained by 3.0 T phase-contrast magnetic resonance imaging (MRI) and hemodynamic characteristics by right heart catheterization in
Xiaojuan Guo, Min Liu, Zhanhong Ma, Shuangkun Wang, Yuanhua Yang, Zhenguo Zhai, Chen Wang, Renyou Zhai   +7 more
doaj   +1 more source

Uncoupling of Microvascular Blood Flow and Capillary Density in Vascular Cognitive Impairment

Frontiers in Neurology, 2019
Cerebral small vessel disease (cSVD) plays an important role in dementia and is a major cause for vascular cognitive impairment (VCI). Recent studies hypothesized that capillary dysfunction including reduction of capillary patency, rather than a flow ...
Chenxing Eleana Zhang, Chenxing Eleana Zhang, Julie Staals, Julie Staals, Robert Jan van Oostenbrugge, Robert Jan van Oostenbrugge, Hans Vink, Hans Vink   +7 more
doaj   +1 more source

Visual Exploration of Simulated and Measured Blood Flow [PDF]

arXiv, 2012
Morphology of cardiovascular tissue is influenced by the unsteady behavior of the blood flow and vice versa. Therefore, the pathogenesis of several cardiovascular diseases is directly affected by the blood-flow dynamics. Understanding flow behavior is of vital importance to understand the cardiovascular system and potentially harbors a considerable ...
arxiv  

A Novel Protein‐Polysaccharide Oral Nanoemulsion Targeting Activated Hepatic Stellate Cells to Enhance the Therapeutic Effect of Pirfenidone on Fibrosis After Transarterial Chemoembolization for Liver Cancer

Advanced Functional Materials, EarlyView.
Transarterial Chemoembolization (TACE) may aggravate liver fibrosis. In this study, a novel oral targeting nanoemulsion is fabricated to enhance the therapeutic effect of antifibrotic drug‐pirfenidone (PFD) on fibrosis after TACE. Studies have shown that PFD nanoemulsion can enhance the oral liver targeting effect of PFD, and effectively improve the ...
Zhimei Cheng, Shan Xu, Yi Lei, Huizhou He, Runbin Sun, Xingle Jin, Cheneryu Huang, Yuhao Zheng, Jianqing Peng, Lei Tang, Peng Luo, Yi Chen, Shuai Zhang   +12 more
wiley   +1 more source

Relationship between Vascular Resistance and Sympathetic Nerve Fiber Density in Arterial Vessels in Children With Sleep Disordered Breathing

Journal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2017
BackgroundSleep disordered breathing in children is associated with increased blood flow velocity and sympathetic overactivity. Sympathetic overactivity results in peripheral vasoconstriction and reduced systemic vascular compliance, which increases ...
Anna Kontos, Kurt Lushington, James Martin, Quenten Schwarz, Ryan Green, David Wabnitz, Xiangjun Xu, Elke M. Sokoya, Scott Willoughby, Mathias Baumert, Antonio Ferrante, Melissa La Forgia, Declan Kennedy   +12 more
doaj   +1 more source

Functional Ultrasound Speckle Decorrelation‐Based Velocimetry of the Brain

Advanced Science, 2020
A high‐speed, contrast‐free, quantitative ultrasound velocimetry (vUS) for blood flow velocity imaging throughout the rodent brain is developed based on the normalized first‐order temporal autocorrelation function of the ultrasound field signal.
Jianbo Tang, Dmitry D. Postnov, Kivilcim Kilic, Sefik Evren Erdener, Blaire Lee, John T. Giblin, Thomas L. Szabo, David A. Boas   +7 more
doaj   +1 more source

A Deep Learning Bidirectional Temporal Tracking Algorithm for Automated Blood Cell Counting from Non-invasive Capillaroscopy Videos [PDF]

arXiv, 2020
Oblique back-illumination capillaroscopy has recently been introduced as a method for high-quality, non-invasive blood cell imaging in human capillaries. To make this technique practical for clinical blood cell counting, solutions for automatic processing of acquired videos are needed.
arxiv  

Direct Ink Writing of Conductive Hydrogels

Advanced Functional Materials, EarlyView.
This review examines the use of direct ink writing (DIW) for fabricating conductive hydrogels with customizable 3D structures. It outlines the rheological requirements for successful DIW, followed by an exploration of the materials and ink formulations used to impart electronic and/or ionic conductivity to hydrogels while maintaining printability ...
Monica Ho, Aline Braz Ramirez, Negar Akbarnia, Eric Croiset, Elisabeth Prince, Gerald G. Fuller, Milad Kamkar   +6 more
wiley   +1 more source

In vivo label-free measurement of blood flow velocity symmetry based on dual line scanning third-harmonic generation microscopy excited at the 1700 nm window

Journal of Innovative Optical Health Sciences
Measurement of blood flow velocity is key to understanding physiology and pathology in vivo. While most measurements are performed at the middle of the blood vessel, little research has been done on characterizing the instantaneous blood flow velocity ...
Hui Cheng, Jincheng Zhong, Ping Qiu, Ke Wang   +3 more
doaj   +1 more source

The effect of sildenafil on retinal blood velocity in healthy subjects

Eye and Vision, 2018
Purpose It has been suggested that Sildenafil may have beneficial therapeutic effects in the treatment of neurodegenerative disorders. The retinal circulation is of significant interest as a marker of cerebral vascular disease since the retinal and ...
Asaf Achiron, Idan Hecht, Chen Juza, Adiel Barak, Zvia Burgansky-Eliash   +4 more
doaj   +1 more source